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运用穆斯堡尔效应的方法考查了原始制备态和退火态的Fe_(73.1)Cu_(1.2)Nb_(3.2)Si_(12.5)B_(10)合金的显微组织。计算表明:退火的具有超细晶粒的微晶合金的显微组织主要由主晶相Fe_(75+y)Si_(25-y)型有序相和非晶态晶界相组成,可能含有很少量的顺磁相。组织中主相Fe_(75+y)Si_(25-y)含量大约为70％,非晶相约为26％。有序相Fe_(75+y)Si_(25-y)中的y在5—7之间。
The microstructure of the Fe 73.1 Cu 1.2 Nb 3.2 Si 12.5 B 10 alloy in the as-prepared and as-annealed samples was investigated by the Mössbauer effect. The results show that the microstructure of the as-annealed microcrystalline alloy with ultra-fine grains mainly consists of the main phase Fe_ (75 + y) Si_ (25-y) -type ordered phase and the amorphous phase, possibly containing A small amount of paramagnetic phase. The content of main phase Fe_ (75 + y) Si_ (25-y) in the microstructure is about 70% and the amorphous phase is about 26%. The y in the ordered phase Fe_ (75 + y) Si_ (25-y) is between 5-7.